WO2013183086A1 - Optical recording medium playback device - Google Patents

Optical recording medium playback device Download PDF

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Publication number
WO2013183086A1
WO2013183086A1 PCT/JP2012/003701 JP2012003701W WO2013183086A1 WO 2013183086 A1 WO2013183086 A1 WO 2013183086A1 JP 2012003701 W JP2012003701 W JP 2012003701W WO 2013183086 A1 WO2013183086 A1 WO 2013183086A1
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WO
WIPO (PCT)
Prior art keywords
recording medium
optical recording
light
light receiving
state
Prior art date
Application number
PCT/JP2012/003701
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French (fr)
Japanese (ja)
Inventor
和敏 森下
Original Assignee
三菱電機株式会社
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Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2012/003701 priority Critical patent/WO2013183086A1/en
Publication of WO2013183086A1 publication Critical patent/WO2013183086A1/en

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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
    • G11B17/02—Details
    • G11B17/04—Feeding or guiding single record carrier to or from transducer unit
    • G11B17/05—Feeding or guiding single record carrier to or from transducer unit specially adapted for discs not contained within cartridges
    • G11B17/051—Direct insertion, i.e. without external loading means

Definitions

  • the present invention relates to an optical recording medium reproducing apparatus for directly inserting and ejecting an optical recording medium such as a CD (Compact Disk) or a DVD (Digital Versatile Disk).
  • an optical recording medium such as a CD (Compact Disk) or a DVD (Digital Versatile Disk).
  • an optical recording medium reproducing apparatus adopting a slot loading method in which an optical recording medium such as a CD or a DVD is directly inserted into the apparatus without using a transport tray has been used.
  • the slot loading type optical recording medium reproducing apparatus when the optical recording medium is inserted from the insertion slot, the optical recording medium is conveyed by the conveying means toward the reproducing position inside the apparatus.
  • the transport operation is immediately performed. Stop and move to discharge operation.
  • Patent Document 1 does not detect that the optical recording medium has moved to the clamp position within a predetermined time after the start of conveyance of the optical recording medium, and the insertion detection switch is OFF and the door switch indicates the door closed state.
  • a disk device is disclosed in which the door is opened and the optical recording medium is set in a state where it can be immediately conveyed. With this configuration, even when the optical recording medium is inserted and then pulled out from the insertion slot, the optical recording medium can be immediately received.
  • the present invention has been made to solve the above-described problems, maintains a highly accurate foreign matter detection function, and can accept reinsertion without waiting time when the optical recording medium is pulled out immediately after insertion.
  • An object of the present invention is to provide an optical recording medium reproducing device having a function.
  • An optical recording medium reproducing device includes a transport mechanism that transports an insert along a transport path in the device, a plurality of detection units that detect the insert transported along the transport path by the transport mechanism, While the insert is being transported by the transport mechanism, when the detection unit located on the side of the optical recording medium insertion port becomes the detection state and then enters the non-detection state, the non-detection state is detected. If it is within the predetermined waiting time from the time when the detection state is reached, the conveying operation by the conveying mechanism is stopped, and if the predetermined waiting time is exceeded, the discharging operation is performed by the conveying mechanism, and the detection unit enters the detection state within the waiting time. And a controller that resumes the transport operation by the transport mechanism.
  • an optical recording medium reproducing device having a highly accurate foreign object detection function and improving user operability.
  • FIG. 1 is a block diagram showing a configuration of an optical recording medium reproducing device according to Embodiment 1.
  • FIG. FIG. 6 is a diagram illustrating an arrangement position of a measurement unit and an optical recording medium conveyance operation of the optical recording medium reproducing device according to the first embodiment.
  • 3 is a flowchart showing an operation of the optical recording medium reproducing device according to the first embodiment.
  • 6 is a diagram showing determination conditions for determining an insertion state of an insert in the optical recording medium reproducing device according to Embodiment 1.
  • FIG. 6 is an explanatory diagram showing a detection state of an insertion detection unit and an operation state of a motor of the optical recording medium reproducing device according to Embodiment 1.
  • FIG. 6 is an explanatory diagram showing a detection state of an insertion detection unit and an operation state of a motor of the optical recording medium reproducing device according to Embodiment 1.
  • FIG. 6 is an explanatory diagram showing a detection state of an insertion detection unit and an operation state of a motor of the optical recording medium reproducing device according to Embodiment 1.
  • FIG. 6 is an explanatory diagram showing a detection state of an insertion detection unit and an operation state of a motor of the optical recording medium reproducing device according to Embodiment 1.
  • FIG. 6 is an explanatory diagram showing a detection state of an insertion detection unit and an operation state of a motor of the optical recording medium reproducing device according to Embodiment 1.
  • FIG. 1 is a block diagram showing a configuration of an optical recording medium reproducing apparatus according to Embodiment 1 of the present invention.
  • the optical recording medium reproducing device includes a first measuring unit 10, a second measuring unit 20, an arithmetic processing unit 30, a control unit 40, a servo unit 50, and a driving unit 60.
  • the optical recording medium 70 is directly inserted through an insertion slot (not shown) by the slot loading method.
  • the first measurement unit 10 and the second measurement unit 20 include light emitting elements 11 and 21, light receiving elements 12 and 22, I / V converters 13 and 23, and amplifiers 14 and 24.
  • the light emitting elements 11 and 21 are configured by, for example, light emitting diodes, and emit light in a predetermined direction.
  • the light receiving elements 12 and 22 are configured by, for example, phototransistors or the like, receive light emitted from the light emitting elements 11 and 21, and output a current value corresponding to the intensity of the received light (hereinafter referred to as the amount of received light). .
  • the light emitting elements 11 and 21 and the light emitting elements 11 and 21 are disposed in the vicinity of an insertion opening (not shown) of the optical recording medium 70. Detailed arrangement positions will be described later.
  • the I / V converters 13 and 23 convert a current value corresponding to the amount of light received from the light receiving elements 12 and 22 into a voltage value.
  • the amplifiers 14 and 24 amplify the control signal input from the control unit 40 and output it to the light emitting element 11.
  • the arithmetic processing unit 30 includes an AD converter 31, an insertion detection unit 32, a timer 33, and an insertion state determination unit 34.
  • the AD converter 31 performs A / D conversion on the voltage value converted by the I / V converters 13 and 23.
  • the insertion detection unit 32 detects the insertion of the insert based on whether or not the received light amounts of the light receiving element 12 and the light receiving element 22 are larger than a predetermined value based on the received light amount A / D converted by the AD converter 31. To do.
  • the amount of light received by the light receiving elements 12 and 22 is equal to or less than the specified value, it is detected that the light receiving elements 12 and 22 are shielded from light by the insert inserted in the apparatus, and the amount of light received by the light receiving elements 12 and 22 is determined. When it is larger than the specified value, it is detected that no insert is inserted and the light receiving elements 12 and 22 are not shielded from light by the insert.
  • the timer 33 starts measuring time when the insertion detection unit 32 determines that the amount of light received by any one of the light receiving elements 12 and 22 is equal to or less than a specified value. That is, the elapsed time from the start of insertion of the insert is measured.
  • the insertion state determination unit 34 determines whether the optical recording medium 70 has been normally inserted based on the light reception state of the light receiving elements 12 and 22 input from the insertion detection unit 32 and the measurement time of the timer 33 or whether the optical recording medium 70 has been inserted. Then, it is determined whether it has been pulled out in a short time after it has been pulled out, forcibly pulled out during the transport operation of the inserted optical recording medium 70, or whether foreign matter other than the optical recording medium 70 has been inserted.
  • the control unit 40 controls the drive unit 60 via the servo unit 50 based on the detection result of the insertion detection unit 32 and the determination result of the insertion state determination unit 34, and performs the transport operation or discharge operation of the optical recording medium 70.
  • the servo unit 50 outputs a conveyance control signal to the drive unit 60 based on the control of the control unit 40.
  • the drive unit 60 includes an amplifier 61, a motor 62, a transport mechanism 63, and a loading completion detection unit 64, and accepts insertion of the optical storage medium 70.
  • the transport control signal input from the servo unit 50 is amplified by the amplifier 61, and the motor 62 starts operating to drive the transport mechanism 63 to transport the optical recording medium 70 in the insertion direction, or to transport the optical recording medium 70.
  • the loading completion detection unit 64 includes a switch that is pressed when the optical recording medium 70 reaches the reproduction position, and detects loading completion by turning on / off the switch.
  • the optical recording medium 70 has a recording surface on which recorded information is reproduced by the incidence of a light beam.
  • FIG. 2 is a diagram showing the arrangement positions of the first measurement unit and the second measurement unit of the optical recording medium reproducing apparatus according to Embodiment 1 and the operation of transporting the optical recording medium.
  • 2A is a top view showing a state in which the optical recording medium 70 is inserted into the insertion slot by a user operation, or a state in which the optical recording medium 70 is transported to the discharge operation completion position, and FIG. The side view is shown.
  • FIG. 2C is a top view showing a state where the optical recording medium 70 is conveyed to the reproduction position, and FIG. 2D shows a side view thereof.
  • the light emitting element 11 and the light receiving element 12 of the first measuring unit 10 are arranged in parallel in the vicinity of the insertion opening (not shown) of the optical recording medium 70 and in a direction parallel to the insertion direction of the optical recording medium 70.
  • the light emitting element 21 and the light receiving element 22 of the second measuring unit 20 are juxtaposed in the vicinity of the insertion opening of the optical recording medium 70 and in a direction perpendicular to the insertion direction of the optical recording medium 70.
  • the light emitted from the light emitting elements 11 and 21 is received by the light emitting elements 11 and 21 in the apparatus.
  • the light is transmitted or reflected by a polarizing means such as a prism 80 provided at a position facing the elements 12 and 22 and enters the light receiving elements 12 and 22.
  • a polarizing means such as a prism 80 provided at a position facing the elements 12 and 22 and enters the light receiving elements 12 and 22.
  • the light emitting elements 11 and 21 are shielded by the insert, and the light receiving elements 12 and 22 are blocked from entering light.
  • 2B and 2D only the prism 80 arranged to face the light emitting element 11 and the light receiving element 12 is shown.
  • the optical recording medium 70 in a state where the regular optical recording medium 70 is inserted by a user operation and is transported to a discharge operation completion position, the optical recording medium 70 is in a direction perpendicular to the insertion direction.
  • the light receiving elements 22 arranged in parallel are shielded from light by the optical recording medium 70, while the light receiving elements 12 arranged in parallel in the direction parallel to the insertion direction are arranged at positions not shielded by the optical recording medium 70.
  • both the light receiving element 12 and the light receiving element 22 are disposed at a position where they are shielded from light.
  • the light receiving element 22 is The light recording medium 70 is always shielded from light. For this reason, if the transport mechanism 63 is driven after the light receiving element 22 is shielded from light, but the light receiving element 22 is in a non-shielded state, the optical recording medium 70 has been pulled out or foreign matter has been removed. It can be determined that it has been inserted.
  • the shape of the foreign matter is such that the light receiving element 22 is shielded during insertion and the foreign matter is completely conveyed into the apparatus. It is assumed that the light receiving element 22 has a shape that changes to light reception before.
  • the two pairs of light emitting elements 11 and 21 and the light receiving elements 12 and 22 are arranged as shown in FIG. 2, and the optical recording medium 70 that can be reproduced by referring to the amount of light received by the light receiving elements 12 and 22 is included.
  • the insert is a reproducible optical recording medium 70 or a foreign object.
  • the reproducible optical recording medium 70 has been inserted normally or whether it has been pulled out in a short time after insertion (for example, 2 seconds or 3 seconds). Accordingly, it is possible to accurately detect the insertion of a foreign substance and to control to accept re-insertion immediately when the reproducible optical recording medium 70 is pulled out in a short time after insertion.
  • the number and arrangement positions of the light emitting elements and the light receiving elements are not limited to the configuration shown in FIG. 2, and can be changed as appropriate.
  • FIG. 3 is a flowchart showing the operation of the optical recording medium reproducing apparatus according to the first embodiment.
  • the optical recording medium 70 is normally inserted, the optical recording medium 70 is pulled out after being inserted for a short time (hereinafter referred to as short-time insertion), and the optical recording medium 70 is a predetermined amount or more.
  • the state of forcibly withdrawing after being transported hereinafter referred to as forced withdrawal
  • the operation of processing for detecting the insertion of foreign matter other than the optical recording medium 70 are shown.
  • the shape of the foreign matter is a shape in which the light receiving element 22 is shielded during insertion and the light receiving element 22 changes to light reception before the foreign matter is completely conveyed into the apparatus.
  • FIG. 4 shows determination conditions for determining normal insertion of the optical recording medium 70, short-time insertion of the optical recording medium 70, forced extraction of the optical recording medium 70, or insertion of foreign matter other than the optical recording medium 70. It is a table.
  • the timer 33 starts measurement based on the detection result (step ST2). Further, the insertion detection unit 32 outputs the detection result to the control unit 40, and the control unit 40 drives the drive unit 60 via the servo unit 50 based on the input determination result to carry the optical recording medium 70. Is started (step ST3).
  • the insertion state determination unit 34 refers to the detection results of the light receiving elements 12 and 22 by the insertion detection unit 32 and shifts from the state where “only the light receiving element 22 is shielded” to the state where “the light receiving element 22 is light received”. Is determined (step ST4).
  • the insertion state determination unit 34 instructs the control unit 40 to stop the conveyance operation.
  • the control unit 40 controls the drive unit 60 via the servo unit 50 based on the conveyance operation stop instruction, and stops the conveyance operation of the optical recording medium 70 (step ST5).
  • the insertion state determination unit 34 further refers to the detection results of the light receiving elements 12 and 22 by the insertion detection unit 32 and the measurement time of the timer 33, and receives a preset re-insertion of the optical recording medium 70 (hereinafter referred to as a standby time).
  • a standby time it is determined whether the amount of light received by the light receiving element 22 has fallen below a predetermined value, that is, whether the optical recording medium 70 has been inserted again. If it is inserted again within the waiting time (step ST6; YES), the insertion state determination unit 34 resets the measurement value of the timer 33 (step ST7), returns to the process of step ST2, and repeats the above-described process.
  • step ST6 when it is not inserted again within the waiting time (step ST6; NO), the insertion state determination unit 34 determines that the insert is a foreign object (step ST8). Thereafter, the control unit 40 is instructed to start the discharge operation, and the control unit 40 controls the drive unit 60 via the server unit 50 based on the discharge operation start instruction, and shifts to the discharge operation (step ST9). After the discharge operation is completed (step ST10), the process is terminated.
  • the conveyance operation is stopped, and re-insertion of the optical recording medium 70 is accepted within the waiting time. Even immediately after 70 is inserted for a short time and pulled out, reinsertion can be accepted, and operability can be improved.
  • the state where “only the light receiving element 22 is shielded” is shifted to the state where “the light receiving element 22 is light received”. It can be determined that foreign matter that is not the optical recording medium 70 is being inserted and transported, and the operation can be shifted to a discharge operation, and foreign matter other than the reproducible optical recording medium 70 can be prevented from being inserted and transported.
  • step ST4 when the determination condition is not satisfied (step ST4; NO), the insertion state determination unit 34 refers to the detection result of the light receiving elements 12 and 22 by the insertion detection unit 32, and “the light receiving element 22 is shielded” / “light receiving element”. It is determined whether or not the state in which 12 is “light-shielding” has shifted to the state in which “light-receiving element 22 receives light” / “light-receiving element 12 is light-shielded” (step ST11). When the determination condition of step ST11 is satisfied (step ST11; YES), the process proceeds to step ST8.
  • step ST11 when the determination condition of step ST11 is not satisfied (step ST11; NO), the insertion state determination unit 34 refers to the detection result of the light receiving elements 12 and 22 by the insertion detection unit 32, and “the light receiving element 22 is shielded” / It is determined whether or not the state where “the light receiving element 12 is shielded” has shifted to the state where “the light receiving element 22 receives light” / “the light receiving element 12 receives light” (step ST12).
  • step ST12 determines that the optical recording medium 70 has been forcibly pulled out (step ST13), and proceeds to the discharge operation of step ST9.
  • step ST12; NO determines whether the switch is turned on and the loading is completed (step ST14). If the switch is OFF (step ST14; NO), the process returns to the determination process of step ST4. On the other hand, if the switch is ON (step ST14; YES), it is determined that the optical recording medium 70 is normally inserted (step ST15), and the process ends.
  • FIG. 5 to 9 are diagrams showing the detection state of the insertion detection unit and the operation of the motor of the optical recording medium reproducing device according to the first embodiment.
  • the arrangement of the light emitting elements 11 and 21 and the light receiving elements 12 and 22 will be described by taking the arrangement shown in FIG. 2 as an example.
  • FIG. 5 shows a case where the reproducible optical recording medium 70 is pulled out and inserted again for a short time.
  • the insertion of the insert is detected when the light receiving element 22 shifts to the light shielding state (“insertion” in FIG. 5), and the motor 62 is driven in the transport direction.
  • the driving of the motor 62 is stopped.
  • the insertion of the insert is detected when the light receiving element 22 again shifts to the light shielding state within the waiting time ("reinsertion" in FIG. 5), and the motor 62 is driven in the transport direction.
  • the measured value of the timer 33 is reset. Thereafter, since the light receiving element 12 shifts to a light shielding state, the motor 62 is continuously driven.
  • FIG. 6 shows a case where the reproducible optical recording medium 70 is pulled out after being inserted for a short time and is not inserted again.
  • the insertion of the insert is detected when the light receiving element 22 shifts to the light shielding state (“insertion” in FIG. 6), and the motor 62 is driven in the transport direction.
  • the driving of the motor 62 is stopped.
  • the motor is driven in the discharge direction.
  • FIG. 7 shows a case where a foreign object is inserted.
  • the insertion of the insert is detected when the light receiving element 22 shifts to the light shielding state (insertion in FIG. 7), and the motor 62 is driven in the transport direction. Thereafter, the light receiving element 12 has shifted to the light shielding state, but the light receiving element 22 has shifted to the light receiving state, so that the motor 62 is driven in the ejection direction.
  • FIG. 8 shows a case in which the reproducible optical recording medium 70 is pulled out after being inserted for a short time and then repeatedly inserted.
  • the insertion of the insert is detected because the light receiving element 22 has shifted to the light shielding state (“insertion” in FIG. 8A), and the motor 62 is driven in the transport direction.
  • the drive of the motor 62 is stopped.
  • the insertion of the insert is detected when the light receiving element 22 again shifts to the light shielding state within the standby time (“reinsertion 1" in FIG. 8A), and the motor 62 is driven in the transport direction.
  • the measured value of the timer 33 is reset.
  • FIG. 8B shows a case where the reproducible optical recording medium 70 is transported to the reproduction position after the short-time insertion is repeated three times. It may be set to accept a plurality of short-time insertions without setting an upper limit number of times and an upper limit time, or when a timer different from the timer 33 is provided and the first short-time insertion is executed
  • the insertion of the optical recording medium 70 may be stopped as an error stop, or the motor 62 may be driven in the ejection direction.
  • FIG. 9 shows the case where the insert is forcibly pulled out.
  • the insertion of the insert is detected from the fact that the light receiving element 22 has shifted to the light shielding state ("insertion" in FIG. 9), and the motor 62 is driven in the conveying direction.
  • the light receiving element 12 also shifts to the light shielding state. Shifts to the light receiving state (“forced extraction” in FIG. 9), and further, since the light receiving element 22 has shifted to the light receiving state, it is determined that the optical recording medium 70 has been forcibly pulled out, and the motor 62 is ejected. Driven in the direction.
  • the reproducible optical recording medium 70 As described above, according to the first embodiment, based on the light receiving state of the light receiving elements 12 and 22, it is possible to insert the reproducible optical recording medium 70, foreign matter, or the optical recording medium. It is determined whether the insertion of 70 is a normal insertion, whether it has been pulled out after being inserted for a short time, or forcibly pulled out. Since it is configured to wait for the re-insertion of the medium 70, the transfer operation can be smoothly performed when the re-insertion is detected.
  • the process proceeds to the discharge operation. Since it comprised so that insertion of a foreign material can be prevented.
  • the light emitting elements 11 and 21 and the light receiving elements 12 and 22 are arranged as shown in FIG. 2, the light receiving element 22 is shielded when the shape of the foreign matter is inserted, and the foreign matter is completely conveyed into the apparatus.
  • the shape of the light receiving element 22 that changes to light reception has been described before the detection. However, the shape of the detectable foreign matter changes as appropriate by changing the number of light emitting elements and the light receiving elements and the arrangement position.
  • any component of the embodiment can be modified or any component of the embodiment can be omitted within the scope of the invention.
  • the optical recording medium reproducing apparatus can be used for an audio reproducing apparatus and the like that realize an improved user operability and a highly accurate foreign object detection function.

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  • Feeding And Guiding Record Carriers (AREA)

Abstract

This optical recording medium playback device is equipped with: a conveyance mechanism (63) for conveying an insert along a conveyance path inside the device; light-receiving components (12, 22) for detecting the insert being conveyed by the conveyance mechanism (63) along the conveyance path; and a control unit (40) whereby when light-receiving component (12) of the light-receiving components (12, 22) that is positioned closer to an insertion opening for an optical recording medium (70) has entered, when the insert is being conveyed by the conveyance mechanism, a non-sensing state after having entered a sensing state, the conveyance operation by the conveyance mechanism (63) is stopped if a predetermined standby time has not been exceeded after the point at which the light-receiving component entered the non-sensing state, or an ejection operation by the conveyance mechanism (63) is performed if the predetermined standby time has been exceeded, and the conveyance operation by the conveyance mechanism (63) is resumed if light-receiving component (12) has entered the sensing state within the standby time.

Description

光記録媒体再生装置Optical recording medium playback device
　この発明は、ＣＤ（Compact Disk）やＤＶＤ（Digital Versatile Disk）などの光記録媒体を直接的に挿入および排出する光記録媒体再生装置に関するものである。 The present invention relates to an optical recording medium reproducing apparatus for directly inserting and ejecting an optical recording medium such as a CD (Compact Disk) or a DVD (Digital Versatile Disk).
　従来より、ＣＤやＤＶＤなどの光記録媒体を搬送トレイを用いることなく、直接装置内に挿入するスロットローディング方式を採用した光記録媒体再生装置が用いられている。スロットローディング方式の光記録媒体再生装置では、挿入口から光記録媒体が挿入されると搬送手段により装置内部の再生位置に向けて搬送される。光記録媒体以外の異物の装置内部への進入を防止するため、搬送手段による光記録媒体の搬送が行われている際に、異常と判断される状態が検出された場合には直ちに搬送動作を停止し、排出動作に移行する。そのため、挿入口から光記録媒体が挿入され、搬送手段により搬送動作が行われている際に、当該光記録媒体が引き抜かれると、異常な動作と判断して直ちに排出動作に移行し、排出動作の状態が解除されるまで光記録媒体の再挿入を受け付けない。そのため、ユーザは排出動作状態が解除されるまで光記録媒体の再挿入を待機する必要があり、操作性が悪いという問題があった。 Conventionally, an optical recording medium reproducing apparatus adopting a slot loading method in which an optical recording medium such as a CD or a DVD is directly inserted into the apparatus without using a transport tray has been used. In the slot loading type optical recording medium reproducing apparatus, when the optical recording medium is inserted from the insertion slot, the optical recording medium is conveyed by the conveying means toward the reproducing position inside the apparatus. In order to prevent foreign matter other than the optical recording medium from entering the inside of the apparatus, when the optical recording medium is being transported by the transporting means, if a state that is determined to be abnormal is detected, the transport operation is immediately performed. Stop and move to discharge operation. Therefore, when the optical recording medium is inserted from the insertion port and the transporting operation is performed by the transporting means, if the optical recording medium is pulled out, it is judged as an abnormal operation, and the operation immediately proceeds to the discharging operation. Re-insertion of the optical recording medium is not accepted until this state is released. For this reason, the user has to wait for re-insertion of the optical recording medium until the ejection operation state is canceled, and there is a problem that the operability is poor.
　この対策として特許文献１では、光記録媒体搬送開始後、所定時間内に光記録媒体がクランプ位置に移行したことが検知されず、且つ挿入検知スイッチがＯＦＦでありドアスイッチがドア閉状態を示している場合には、ドアを開放して光記録媒体を直ちに搬送可能な状態に設定するディスク装置が開示されている。当該構成により、挿入口から光記録媒体を挿入した後に引き抜いた場合であっても、直ちに光記録媒体の受け入れを可能としている。 As a countermeasure, Patent Document 1 does not detect that the optical recording medium has moved to the clamp position within a predetermined time after the start of conveyance of the optical recording medium, and the insertion detection switch is OFF and the door switch indicates the door closed state. In this case, a disk device is disclosed in which the door is opened and the optical recording medium is set in a state where it can be immediately conveyed. With this configuration, even when the optical recording medium is inserted and then pulled out from the insertion slot, the optical recording medium can be immediately received.
特開２００３－２１７２０８号公報Japanese Patent Laid-Open No. 2003-217208
　しかしながら、上述した特許文献１に開示された技術では、光記録媒体挿入後の引き抜きに対して直後の再挿入を可能としているが、再挿入時の異物の挿入に対する対策が取られておらず、装置内への異物の搬送を許可してしまう可能性があるという課題があった。また、光記録媒体再生装置の破損や故障を未然に防止するためには、装置内への異物の搬送を確実に防止する必要があるため精度の高い異物検知機能が不可欠であり、ユーザの操作性向上を実現する技術との両立が困難であるという課題があった。 However, in the technique disclosed in Patent Document 1 described above, reinsertion is possible immediately after removal after insertion of the optical recording medium, but no countermeasure is taken against the insertion of foreign matter during reinsertion. There has been a problem that there is a possibility of allowing the conveyance of foreign matter into the apparatus. In addition, in order to prevent damage or failure of the optical recording medium playback device, it is necessary to reliably prevent foreign matter from being transported into the device, so a highly accurate foreign matter detection function is indispensable. There is a problem that it is difficult to achieve compatibility with the technology that improves the performance.
　この発明は上記のような課題を解決するためになされたもので、精度の高い異物検知機能を維持し、且つ光記録媒体が挿入直後に引き抜かれた場合に待機時間なく再挿入を受付可能な機能を有する光記録媒体再生装置を提供することを目的とする。 The present invention has been made to solve the above-described problems, maintains a highly accurate foreign matter detection function, and can accept reinsertion without waiting time when the optical recording medium is pulled out immediately after insertion. An object of the present invention is to provide an optical recording medium reproducing device having a function.
　この発明に係る光記録媒体再生装置は、装置内の搬送経路に沿って挿入物を搬送する搬送機構と、搬送機構により搬送経路に沿って搬送される挿入物を検知する複数の検知部と、搬送機構により挿入物が搬送されていく途中で、複数の検知部のうち、光記録媒体の挿入口側に位置する検知部が検知状態になったのち非検知状態となった場合に、当該非検知状態となった時点から所定の待機時間内であれば搬送機構による搬送動作を停止させ、所定の待機時間を越えれば、搬送機構による排出動作を行い、待機時間内に検知部が検知状態になった場合は搬送機構による搬送動作を再開させる制御部とを備えるものである。 An optical recording medium reproducing device according to the present invention includes a transport mechanism that transports an insert along a transport path in the device, a plurality of detection units that detect the insert transported along the transport path by the transport mechanism, While the insert is being transported by the transport mechanism, when the detection unit located on the side of the optical recording medium insertion port becomes the detection state and then enters the non-detection state, the non-detection state is detected. If it is within the predetermined waiting time from the time when the detection state is reached, the conveying operation by the conveying mechanism is stopped, and if the predetermined waiting time is exceeded, the discharging operation is performed by the conveying mechanism, and the detection unit enters the detection state within the waiting time. And a controller that resumes the transport operation by the transport mechanism.
　この発明によれば、精度の高い異物検知機能を有し、ユーザの操作性を向上させた光記録媒体再生装置を提供することができる。 According to the present invention, it is possible to provide an optical recording medium reproducing device having a highly accurate foreign object detection function and improving user operability.
実施の形態１による光記録媒体再生装置の構成を示すブロック図である。1 is a block diagram showing a configuration of an optical recording medium reproducing device according to Embodiment 1. FIG. 実施の形態１による光記録媒体再生装置の測定部の配置位置および光記録媒体の搬送動作を示す図である。FIG. 6 is a diagram illustrating an arrangement position of a measurement unit and an optical recording medium conveyance operation of the optical recording medium reproducing device according to the first embodiment. 実施の形態１による光記録媒体再生装置の動作を示すフローチャートである。3 is a flowchart showing an operation of the optical recording medium reproducing device according to the first embodiment. 実施の形態１による光記録媒体再生装置の挿入物の挿入状態を判定するための判定条件を示す図である。6 is a diagram showing determination conditions for determining an insertion state of an insert in the optical recording medium reproducing device according to Embodiment 1. FIG. 実施の形態１による光記録媒体再生装置の挿入検知部の検知状態およびモータの動作状態を示す説明図である。6 is an explanatory diagram showing a detection state of an insertion detection unit and an operation state of a motor of the optical recording medium reproducing device according to Embodiment 1. FIG. 実施の形態１による光記録媒体再生装置の挿入検知部の検知状態およびモータの動作状態を示す説明図である。6 is an explanatory diagram showing a detection state of an insertion detection unit and an operation state of a motor of the optical recording medium reproducing device according to Embodiment 1. FIG. 実施の形態１による光記録媒体再生装置の挿入検知部の検知状態およびモータの動作状態を示す説明図である。6 is an explanatory diagram showing a detection state of an insertion detection unit and an operation state of a motor of the optical recording medium reproducing device according to Embodiment 1. FIG. 実施の形態１による光記録媒体再生装置の挿入検知部の検知状態およびモータの動作状態を示す説明図である。6 is an explanatory diagram showing a detection state of an insertion detection unit and an operation state of a motor of the optical recording medium reproducing device according to Embodiment 1. FIG. 実施の形態１による光記録媒体再生装置の挿入検知部の検知状態およびモータの動作状態を示す説明図である。6 is an explanatory diagram showing a detection state of an insertion detection unit and an operation state of a motor of the optical recording medium reproducing device according to Embodiment 1. FIG.
　以下、この発明をより詳細に説明するために、この発明を実施するための形態について、添付の図面に従って説明する。
実施の形態１．
　図１は、この発明の実施の形態１による光記録媒体再生装置の構成を示すブロック図である。図１において、光記録媒体再生装置は、第１の測定部１０、第２の測定部２０、演算処理部３０、制御部４０、サーボ部５０および駆動部６０で構成されている。当該光記録媒体再生装置には、スロットローディング方式により、挿入口（不図示）を介して直接的に光記録媒体７０が挿入される。次に、各構成の詳細について説明する。 Hereinafter, in order to explain the present invention in more detail, modes for carrying out the present invention will be described with reference to the accompanying drawings.
Embodiment 1 FIG.
FIG. 1 is a block diagram showing a configuration of an optical recording medium reproducing apparatus according to Embodiment 1 of the present invention. In FIG. 1, the optical recording medium reproducing device includes a first measuring unit 10, a second measuring unit 20, an arithmetic processing unit 30, a control unit 40, a servo unit 50, and a driving unit 60. In the optical recording medium reproducing apparatus, the optical recording medium 70 is directly inserted through an insertion slot (not shown) by the slot loading method. Next, details of each component will be described.
　第１の測定部１０および第２の測定部２０は、発光素子１１，２１、受光素子１２，２２、Ｉ／Ｖ変換器１３，２３および増幅器１４，２４で構成されている。
　発光素子１１，２１は、例えば発光ダイオードなどで構成され、所定方向に向けて光を放出する。受光素子１２，２２は、例えばフォトトランジスタなどで構成され、発光素子１１，２１から放出された光を受光し、受光した光の強度（以下、受光量と称する）に応じた電流値を出力する。発光素子１１，２１および発光素子１１，２１は、光記録媒体７０の挿入口（不図示）近傍に配置される。なお、詳細な配置位置については後述する。 The first measurement unit 10 and the second measurement unit 20 include light emitting elements 11 and 21, light receiving elements 12 and 22, I / V converters 13 and 23, and amplifiers 14 and 24.
The light emitting elements 11 and 21 are configured by, for example, light emitting diodes, and emit light in a predetermined direction. The light receiving elements 12 and 22 are configured by, for example, phototransistors or the like, receive light emitted from the light emitting elements 11 and 21, and output a current value corresponding to the intensity of the received light (hereinafter referred to as the amount of received light). . The light emitting elements 11 and 21 and the light emitting elements 11 and 21 are disposed in the vicinity of an insertion opening (not shown) of the optical recording medium 70. Detailed arrangement positions will be described later.
　Ｉ／Ｖ変換器１３，２３は、受光素子１２，２２から出力される受光量に応じた電流値を電圧値に変換する。増幅器１４，２４は、制御部４０から入力される制御信号を増幅し、発光素子１１に出力する。 The I / V converters 13 and 23 convert a current value corresponding to the amount of light received from the light receiving elements 12 and 22 into a voltage value. The amplifiers 14 and 24 amplify the control signal input from the control unit 40 and output it to the light emitting element 11.
　演算処理部３０は、ＡＤ変換器３１、挿入検知部３２、タイマ３３および挿入状態判定部３４で構成されている。
　ＡＤ変換器３１は、Ｉ／Ｖ変換器１３，２３で変換された電圧値をＡ／Ｄ変換する。
挿入検知部３２は、ＡＤ変換器３１でＡ／Ｄ変換された受光量に基づいて、受光素子１２および受光素子２２の受光量が規定値より大きいか否かに基づいて挿入物の挿入を検知する。受光素子１２，２２の受光量が規定値以下である場合には、装置内に挿入された挿入物により受光素子１２，２２が遮光されていると検知し、受光素子１２，２２の受光量が規定値より大きい場合には、挿入物が挿入されておらず、挿入物により受光素子１２，２２が遮光されていないと検知する。 The arithmetic processing unit 30 includes an AD converter 31, an insertion detection unit 32, a timer 33, and an insertion state determination unit 34.
The AD converter 31 performs A / D conversion on the voltage value converted by the I / V converters 13 and 23.
The insertion detection unit 32 detects the insertion of the insert based on whether or not the received light amounts of the light receiving element 12 and the light receiving element 22 are larger than a predetermined value based on the received light amount A / D converted by the AD converter 31. To do. When the amount of light received by the light receiving elements 12 and 22 is equal to or less than the specified value, it is detected that the light receiving elements 12 and 22 are shielded from light by the insert inserted in the apparatus, and the amount of light received by the light receiving elements 12 and 22 is determined. When it is larger than the specified value, it is detected that no insert is inserted and the light receiving elements 12 and 22 are not shielded from light by the insert.
　タイマ３３は、挿入検知部３２がいずれかの受光素子１２，２２の受光量が規定値以下であると判定した場合に、時間の計測を開始する。すなわち、挿入物の挿入開始からの経過時間を計測する。挿入状態判定部３４は、挿入検知部３２から入力される受光素子１２，２２の受光状態と、タイマ３３の計測時間に基づいて、光記録媒体７０が正常挿入されたか、光記録媒体７０が挿入された後短時間で引き抜かれたか、挿入された光記録媒体７０の搬送動作中に強制的に引き抜かれたか、光記録媒体７０以外の異物が挿入されたかなどの挿入状態を判定する。 The timer 33 starts measuring time when the insertion detection unit 32 determines that the amount of light received by any one of the light receiving elements 12 and 22 is equal to or less than a specified value. That is, the elapsed time from the start of insertion of the insert is measured. The insertion state determination unit 34 determines whether the optical recording medium 70 has been normally inserted based on the light reception state of the light receiving elements 12 and 22 input from the insertion detection unit 32 and the measurement time of the timer 33 or whether the optical recording medium 70 has been inserted. Then, it is determined whether it has been pulled out in a short time after it has been pulled out, forcibly pulled out during the transport operation of the inserted optical recording medium 70, or whether foreign matter other than the optical recording medium 70 has been inserted.
　制御部４０は、挿入検知部３２の検知結果、および挿入状態判定部３４の判定結果に基づいて、サーボ部５０を介して駆動部６０を制御し、光記録媒体７０の搬送動作あるいは排出動作を制御する。サーボ部５０は、制御部４０の制御に基づいて、搬送制御信号を駆動部６０に出力する。
　駆動部６０は、増幅器６１、モータ６２、搬送機構６３およびローディング完了検知部６４で構成され、光記憶媒体７０の挿入を受け付ける。サーボ部５０から入力された搬送制御信号は、増幅器６１で増幅され、モータ６２が動作を開始して搬送機構６３を駆動し、光記録媒体７０を挿入方向に搬送する、あるいは光記録媒体７０を排出方向に搬送する。光記録媒体７０が再生位置に到達すると搬送動作を完了し、排出位置に到達すると排出動作を完了する。ローディング完了検知部６４は、光記録媒体７０が再生位置に到達すると押されるスイッチを備え、スイッチのＯＮ／ＯＦＦによりローディング完了を検知する。光記録媒体７０は、光ビームの入射により記録情報が再生される記録面を有している。 The control unit 40 controls the drive unit 60 via the servo unit 50 based on the detection result of the insertion detection unit 32 and the determination result of the insertion state determination unit 34, and performs the transport operation or discharge operation of the optical recording medium 70. Control. The servo unit 50 outputs a conveyance control signal to the drive unit 60 based on the control of the control unit 40.
The drive unit 60 includes an amplifier 61, a motor 62, a transport mechanism 63, and a loading completion detection unit 64, and accepts insertion of the optical storage medium 70. The transport control signal input from the servo unit 50 is amplified by the amplifier 61, and the motor 62 starts operating to drive the transport mechanism 63 to transport the optical recording medium 70 in the insertion direction, or to transport the optical recording medium 70. Transport in the discharge direction. When the optical recording medium 70 reaches the reproduction position, the transport operation is completed, and when the optical recording medium 70 reaches the discharge position, the discharge operation is completed. The loading completion detection unit 64 includes a switch that is pressed when the optical recording medium 70 reaches the reproduction position, and detects loading completion by turning on / off the switch. The optical recording medium 70 has a recording surface on which recorded information is reproduced by the incidence of a light beam.
　次に、第１の測定部１０および第２の測定部２０の配置位置、および挿入物の挿入および搬送について説明する。なお以下では、挿入物として装置が再生可能な光記録媒体７０が挿入された場合を例に説明する。
　図２は、実施の形態１による光記録媒体再生装置の第１の測定部および第２の測定部の配置位置および光記録媒体の搬送動作を示す図である。図２（ａ）はユーザ動作により光記録媒体７０が挿入口に挿入された状態、あるいは光記録媒体７０が排出動作完了位置まで搬送された状態を示す上面図であり、図２（ｂ）はその側面図を示している。図２（ｃ）は光記録媒体７０が再生位置に搬送された状態を示す上面図であり、図２（ｄ）はその側面図を示している。 Next, arrangement positions of the first measurement unit 10 and the second measurement unit 20, and insertion and conveyance of the insert will be described. Hereinafter, a case where an optical recording medium 70 that can be reproduced by the apparatus is inserted as an insert will be described as an example.
FIG. 2 is a diagram showing the arrangement positions of the first measurement unit and the second measurement unit of the optical recording medium reproducing apparatus according to Embodiment 1 and the operation of transporting the optical recording medium. 2A is a top view showing a state in which the optical recording medium 70 is inserted into the insertion slot by a user operation, or a state in which the optical recording medium 70 is transported to the discharge operation completion position, and FIG. The side view is shown. FIG. 2C is a top view showing a state where the optical recording medium 70 is conveyed to the reproduction position, and FIG. 2D shows a side view thereof.
　図２に示すように第１の測定部１０の発光素子１１と受光素子１２は、光記録媒体７０の挿入口（不図示）近傍、且つ光記録媒体７０の挿入方向と平行な方向に並列させる。第２の測定部２０の発光素子２１と受光素子２２は、光記録媒体７０の挿入口近傍、且つ光記録媒体７０の挿入方向と垂直な方向に並列させる。 As shown in FIG. 2, the light emitting element 11 and the light receiving element 12 of the first measuring unit 10 are arranged in parallel in the vicinity of the insertion opening (not shown) of the optical recording medium 70 and in a direction parallel to the insertion direction of the optical recording medium 70. . The light emitting element 21 and the light receiving element 22 of the second measuring unit 20 are juxtaposed in the vicinity of the insertion opening of the optical recording medium 70 and in a direction perpendicular to the insertion direction of the optical recording medium 70.
　図２（ｂ）に示すように、装置内に光記録媒体７０などの挿入物が存在しない場合には、発光素子１１，２１から放出された光は、装置内の発光素子１１，２１および受光素子１２，２２に対向する位置に設けられたプリズム８０などの偏光手段により透過または反射されて受光素子１２，２２に入射する。一方、装置内に光記録媒体７０などの挿入物が存在する場合には、発光素子１１，２１が挿入物により遮光され、受光素子１２，２２に光が入射しない遮光状態となる。なお、図２（ｂ）および図２（ｄ）では、発光素子１１および受光素子１２に対向して配置したプリズム８０のみを示している。 As shown in FIG. 2B, when there is no insert such as an optical recording medium 70 in the apparatus, the light emitted from the light emitting elements 11 and 21 is received by the light emitting elements 11 and 21 in the apparatus. The light is transmitted or reflected by a polarizing means such as a prism 80 provided at a position facing the elements 12 and 22 and enters the light receiving elements 12 and 22. On the other hand, when an insert such as the optical recording medium 70 exists in the apparatus, the light emitting elements 11 and 21 are shielded by the insert, and the light receiving elements 12 and 22 are blocked from entering light. 2B and 2D, only the prism 80 arranged to face the light emitting element 11 and the light receiving element 12 is shown.
　さらに、図２（ａ），（ｂ）に示すように、正規の光記録媒体７０がユーザ動作により挿入された状態、および排出動作完了位置まで搬送された状態では、挿入方向と垂直な方向に並列させた受光素子２２が光記録媒体７０により遮光され、一方挿入方向の平行な方向に並列させた受光素子１２は光記録媒体７０により遮光されない位置に配置される。当該配置により、受光素子２２のみ受光量が規定値以下となった場合に、再生可能な光記録媒体７０の挿入あるいは排出位置までの搬送動作の完了を判断することができる。 Further, as shown in FIGS. 2A and 2B, in a state where the regular optical recording medium 70 is inserted by a user operation and is transported to a discharge operation completion position, the optical recording medium 70 is in a direction perpendicular to the insertion direction. The light receiving elements 22 arranged in parallel are shielded from light by the optical recording medium 70, while the light receiving elements 12 arranged in parallel in the direction parallel to the insertion direction are arranged at positions not shielded by the optical recording medium 70. With this arrangement, when the amount of light received by only the light receiving element 22 is less than or equal to the specified value, it is possible to determine whether the reproducible optical recording medium 70 has been inserted or ejected to the discharge position.
　また、図２（ｃ），（ｄ）に示すように、光記録媒体７０が再生位置に搬送された状態では、受光素子１２および受光素子２２がともに遮光される位置に配置される。 Further, as shown in FIGS. 2C and 2D, in a state where the optical recording medium 70 is conveyed to the reproduction position, both the light receiving element 12 and the light receiving element 22 are disposed at a position where they are shielded from light.
　さらに、再生可能な光記録媒体７０が挿入位置から再生位置まで搬送される過程では（図２（ａ），（ｂ）から図２（ｃ），（ｄ）にかけての移動）、受光素子２２は常に光記録媒体７０により遮光された状態となる。そのため、受光素子２２が遮光された状態となった後に、搬送機構６３が駆動しているが受光素子２２が非遮光状態となった場合には、光記録媒体７０が引き抜かれた、あるいは異物が挿入されたと判断することができる。なお、図２で示した発光素子１１，２１および受光素子１２，２２の配置とした場合には、異物の形状は、挿入時に受光素子２２を遮光し、異物が装置内に完全に搬送される前に受光素子２２が受光に変化する形状であるものとする。 Further, in the process in which the reproducible optical recording medium 70 is transported from the insertion position to the reproduction position (movement from FIGS. 2A and 2B to FIGS. 2C and 2D), the light receiving element 22 is The light recording medium 70 is always shielded from light. For this reason, if the transport mechanism 63 is driven after the light receiving element 22 is shielded from light, but the light receiving element 22 is in a non-shielded state, the optical recording medium 70 has been pulled out or foreign matter has been removed. It can be determined that it has been inserted. In the case of the arrangement of the light emitting elements 11 and 21 and the light receiving elements 12 and 22 shown in FIG. 2, the shape of the foreign matter is such that the light receiving element 22 is shielded during insertion and the foreign matter is completely conveyed into the apparatus. It is assumed that the light receiving element 22 has a shape that changes to light reception before.
　このように、二対の発光素子１１，２１および受光素子１２，２２を、図２に示すように配置し、受光素子１２，２２の受光量を参照して再生可能な光記録媒体７０を含めた挿入物により遮光された状態を検知することにより、挿入物が再生可能な光記録媒体７０であるか異物であるかを判別することができる。さらに再生可能な光記録媒体７０が正常に挿入されたか、挿入後短時間（例えば、２秒や３秒など）で引き抜かれたかを判別することができる。これにより、異物の挿入を精度よく検出すると共に、再生可能な光記録媒体７０が挿入後短時間で引き抜かれた場合には、すぐに再挿入を受け付ける制御を行うことができる。 In this way, the two pairs of light emitting elements 11 and 21 and the light receiving elements 12 and 22 are arranged as shown in FIG. 2, and the optical recording medium 70 that can be reproduced by referring to the amount of light received by the light receiving elements 12 and 22 is included. By detecting the state of being blocked by the inserted insert, it is possible to determine whether the insert is a reproducible optical recording medium 70 or a foreign object. Furthermore, it is possible to determine whether the reproducible optical recording medium 70 has been inserted normally or whether it has been pulled out in a short time after insertion (for example, 2 seconds or 3 seconds). Accordingly, it is possible to accurately detect the insertion of a foreign substance and to control to accept re-insertion immediately when the reproducible optical recording medium 70 is pulled out in a short time after insertion.
　なお、発光素子および受光素子の配置数および配置位置は、図２の構成に限定されるものではなく、適宜変更可能である。 Note that the number and arrangement positions of the light emitting elements and the light receiving elements are not limited to the configuration shown in FIG. 2, and can be changed as appropriate.
　次に、光記録媒体再生装置の動作について図３および図４を参照しながら説明する。
　図３は、実施の形態１による光記録媒体再生装置の動作を示すフローチャートである。図３のフローチャートでは、光記録媒体７０の正常挿入、光記録媒体７０が短時間挿入された後の引き抜ぬかれた状態（以下、短時間挿入と称する）、光記録媒体７０が所定量以上搬送された後に強制的に引き抜かれた状態（以下、強制的引き抜きと称する）、および光記録媒体７０以外の異物の挿入を検知する処理の動作を示す。また、図３のフローチャートでは、発光素子１１，２１および受光素子１２，２２を図２に示す配置とした場合を例に説明する。また、異物の形状は、挿入時に受光素子２２を遮光し、異物が装置内に完全に搬送される前に受光素子２２が受光に変化する形状であるものとする。 Next, the operation of the optical recording medium reproducing apparatus will be described with reference to FIGS.
FIG. 3 is a flowchart showing the operation of the optical recording medium reproducing apparatus according to the first embodiment. In the flowchart of FIG. 3, the optical recording medium 70 is normally inserted, the optical recording medium 70 is pulled out after being inserted for a short time (hereinafter referred to as short-time insertion), and the optical recording medium 70 is a predetermined amount or more. The state of forcibly withdrawing after being transported (hereinafter referred to as forced withdrawal) and the operation of processing for detecting the insertion of foreign matter other than the optical recording medium 70 are shown. In the flowchart of FIG. 3, the case where the light emitting elements 11 and 21 and the light receiving elements 12 and 22 are arranged as shown in FIG. 2 will be described as an example. In addition, the shape of the foreign matter is a shape in which the light receiving element 22 is shielded during insertion and the light receiving element 22 changes to light reception before the foreign matter is completely conveyed into the apparatus.
　また図４は、光記録媒体７０の正常挿入、光記録媒体７０の短時間挿入、光記録媒体７０の強制的引き抜きあるいは光記録媒体７０以外の異物の挿入を判定するための、判定条件を示した表である。 FIG. 4 shows determination conditions for determining normal insertion of the optical recording medium 70, short-time insertion of the optical recording medium 70, forced extraction of the optical recording medium 70, or insertion of foreign matter other than the optical recording medium 70. It is a table.
　挿入検知部３２が、受光素子２２の受光量が規定値以下になったと検知すると（ステップＳＴ１）、当該検知結果に基づきタイマ３３が計測を開始する（ステップＳＴ２）。さらに、挿入検知部３２は検知結果を制御部４０に出力し、制御部４０は入力された判定結果に基づいて、サーボ部５０を介して駆動部６０を駆動させ、光記録媒体７０の搬送動作を開始する（ステップＳＴ３）。挿入状態判定部３４は、挿入検知部３２による受光素子１２，２２の検知結果を参照し、「受光素子２２のみが遮光」である状態から、「受光素子２２が受光」である状態に移行したか否か判定を行う（ステップＳＴ４）。 When the insertion detection unit 32 detects that the amount of light received by the light receiving element 22 has become equal to or less than the specified value (step ST1), the timer 33 starts measurement based on the detection result (step ST2). Further, the insertion detection unit 32 outputs the detection result to the control unit 40, and the control unit 40 drives the drive unit 60 via the servo unit 50 based on the input determination result to carry the optical recording medium 70. Is started (step ST3). The insertion state determination unit 34 refers to the detection results of the light receiving elements 12 and 22 by the insertion detection unit 32 and shifts from the state where “only the light receiving element 22 is shielded” to the state where “the light receiving element 22 is light received”. Is determined (step ST4).
　判定条件を満たす場合（ステップＳＴ４；ＹＥＳ）、挿入状態判定部３４は、制御部４０に対して搬送動作停止を指示する。制御部４０は、搬送動作停止指示に基づいてサーボ部５０を介して駆動部６０を制御し、光記録媒体７０の搬送動作を停止する（ステップＳＴ５）。 When the determination condition is satisfied (step ST4; YES), the insertion state determination unit 34 instructs the control unit 40 to stop the conveyance operation. The control unit 40 controls the drive unit 60 via the servo unit 50 based on the conveyance operation stop instruction, and stops the conveyance operation of the optical recording medium 70 (step ST5).
　挿入状態判定部３４は、さらに挿入検知部３２による受光素子１２，２２の検知結果およびタイマ３３の計測時間を参照し、あらかじめ設定した光記録媒体７０の再挿入を受け付ける時間（以下、待機時間と称する）内に受光素子２２の受光量が規定値以下になったか、すなわち光記録媒体７０が再度挿入されたか否か判定を行う（ステップＳＴ６）。待機時間内に再度挿入された場合（ステップＳＴ６；ＹＥＳ）、挿入状態判定部３４はタイマ３３の計測値をリセットし（ステップＳＴ７）、ステップＳＴ２の処理に戻り、上述した処理を繰り返す。 The insertion state determination unit 34 further refers to the detection results of the light receiving elements 12 and 22 by the insertion detection unit 32 and the measurement time of the timer 33, and receives a preset re-insertion of the optical recording medium 70 (hereinafter referred to as a standby time). In step ST6, it is determined whether the amount of light received by the light receiving element 22 has fallen below a predetermined value, that is, whether the optical recording medium 70 has been inserted again. If it is inserted again within the waiting time (step ST6; YES), the insertion state determination unit 34 resets the measurement value of the timer 33 (step ST7), returns to the process of step ST2, and repeats the above-described process.
　一方、待機時間内に再度挿入されなかった場合には（ステップＳＴ６；ＮＯ）、挿入状態判定部３４は挿入物が異物であると判定する（ステップＳＴ８）。その後、制御部４０に対して排出動作開始を指示し、制御部４０は排出動作開始指示に基づいてサーバ部５０を介して駆動部６０を制御し、排出動作へ移行させる（ステップＳＴ９）。排出動作完了後（ステップＳＴ１０）、処理を終了する。 On the other hand, when it is not inserted again within the waiting time (step ST6; NO), the insertion state determination unit 34 determines that the insert is a foreign object (step ST8). Thereafter, the control unit 40 is instructed to start the discharge operation, and the control unit 40 controls the drive unit 60 via the server unit 50 based on the discharge operation start instruction, and shifts to the discharge operation (step ST9). After the discharge operation is completed (step ST10), the process is terminated.
　このように、光記録媒体７０が短時間挿入された後に引き抜かれた場合、搬送動作を停止し、待機時間内であれば光記録媒体７０の再挿入を受け付けるように構成したので、光記録媒体７０が短時間挿入され、引き抜かれた直後であっても再挿入を受け付けることができ、操作性を向上させることができる。 As described above, when the optical recording medium 70 is pulled out after being inserted for a short time, the conveyance operation is stopped, and re-insertion of the optical recording medium 70 is accepted within the waiting time. Even immediately after 70 is inserted for a short time and pulled out, reinsertion can be accepted, and operability can be improved.
　このように、「受光素子２２のみが遮光」である状態から、「受光素子２２が受光」である状態に移行したが、当該移行に要した時間が判定時間を越えた場合には、正規の光記録媒体７０ではない異物の挿入および搬送が行われていると判断し、排出動作に移行することができ、再生可能な光記録媒体７０以外の異物の挿入および搬送を防止することができる。 As described above, the state where “only the light receiving element 22 is shielded” is shifted to the state where “the light receiving element 22 is light received”. It can be determined that foreign matter that is not the optical recording medium 70 is being inserted and transported, and the operation can be shifted to a discharge operation, and foreign matter other than the reproducible optical recording medium 70 can be prevented from being inserted and transported.
　一方、判定条件を満たさない場合（ステップＳＴ４；ＮＯ）、挿入状態判定部３４は、挿入検知部３２による受光素子１２，２２の検知結果を参照し、「受光素子２２が遮光」／「受光素子１２が遮光」である状態から、「受光素子２２が受光」／「受光素子１２が遮光」である状態に移行したか否か判定を行う（ステップＳＴ１１）。ステップＳＴ１１の判定条件を満たす場合（ステップＳＴ１１；ＹＥＳ）、ステップＳＴ８の処理に進む。一方、ステップＳＴ１１の判定条件を満たさない場合（ステップＳＴ１１；ＮＯ）、挿入状態判定部３４は、挿入検知部３２による受光素子１２，２２の検知結果を参照し、「受光素子２２が遮光」／「受光素子１２が遮光」である状態から、「受光素子２２が受光」／「受光素子１２が受光」である状態に移行したか否か判定を行う（ステップＳＴ１２）。 On the other hand, when the determination condition is not satisfied (step ST4; NO), the insertion state determination unit 34 refers to the detection result of the light receiving elements 12 and 22 by the insertion detection unit 32, and “the light receiving element 22 is shielded” / “light receiving element”. It is determined whether or not the state in which 12 is “light-shielding” has shifted to the state in which “light-receiving element 22 receives light” / “light-receiving element 12 is light-shielded” (step ST11). When the determination condition of step ST11 is satisfied (step ST11; YES), the process proceeds to step ST8. On the other hand, when the determination condition of step ST11 is not satisfied (step ST11; NO), the insertion state determination unit 34 refers to the detection result of the light receiving elements 12 and 22 by the insertion detection unit 32, and “the light receiving element 22 is shielded” / It is determined whether or not the state where “the light receiving element 12 is shielded” has shifted to the state where “the light receiving element 22 receives light” / “the light receiving element 12 receives light” (step ST12).
　ステップＳＴ１２の判定条件を満たす場合（ステップＳＴ１２；ＹＥＳ）、挿入状態判定部３４は光記録媒体７０が強制的に引き抜かれたと判定し（ステップＳＴ１３）、ステップＳＴ９の排出動作に進む。一方、ステップＳＴ１２の判定条件を満たさない場合（ステップＳＴ１２；ＮＯ）、ローディング完了検知部６４はスイッチがＯＮされローディングが完了したか否か判定を行う（ステップＳＴ１４）。スイッチがＯＦＦの場合には（ステップＳＴ１４；ＮＯ）、ステップＳＴ４の判定処理に戻る。一方、スイッチがＯＮの場合には（ステップＳＴ１４；ＹＥＳ）、光記録媒体７０の正常挿入動作であると判定し（ステップＳＴ１５）、処理を終了する。 If the determination condition of step ST12 is satisfied (step ST12; YES), the insertion state determination unit 34 determines that the optical recording medium 70 has been forcibly pulled out (step ST13), and proceeds to the discharge operation of step ST9. On the other hand, when the determination condition of step ST12 is not satisfied (step ST12; NO), the loading completion detection unit 64 determines whether the switch is turned on and the loading is completed (step ST14). If the switch is OFF (step ST14; NO), the process returns to the determination process of step ST4. On the other hand, if the switch is ON (step ST14; YES), it is determined that the optical recording medium 70 is normally inserted (step ST15), and the process ends.
　図５から図９は、実施の形態１による光記録媒体再生装置の挿入検知部の検知状態およびモータの動作を示す図である。なお、発光素子１１，２１および受光素子１２，２２の配置は図２に示した配置である場合を例に説明する。
　図５は、再生可能な光記録媒体７０が短時間挿入された後に引き抜かれ、再度挿入された場合を示している。
　受光素子２２が遮光状態に移行したことより挿入物の挿入が検知され（図５の「挿入」）、モータ６２が搬送方向に駆動する。ただし、受光素子２２が受光状態に移行したため（図５の「引き抜き」）、モータ６２の駆動を停止させる。待機時間内に再度受光素子２２が遮光状態に移行したことにより挿入物の挿入が検知され（図５の「再挿入」）、モータ６２が搬送方向に駆動する。ここで、タイマ３３の計測値がリセットされる。その後、受光素子１２が遮光状態に移行するため、モータ６２の駆動が継続される。 5 to 9 are diagrams showing the detection state of the insertion detection unit and the operation of the motor of the optical recording medium reproducing device according to the first embodiment. The arrangement of the light emitting elements 11 and 21 and the light receiving elements 12 and 22 will be described by taking the arrangement shown in FIG. 2 as an example.
FIG. 5 shows a case where the reproducible optical recording medium 70 is pulled out and inserted again for a short time.
The insertion of the insert is detected when the light receiving element 22 shifts to the light shielding state (“insertion” in FIG. 5), and the motor 62 is driven in the transport direction. However, since the light receiving element 22 has shifted to the light receiving state (“pulling” in FIG. 5), the driving of the motor 62 is stopped. The insertion of the insert is detected when the light receiving element 22 again shifts to the light shielding state within the waiting time ("reinsertion" in FIG. 5), and the motor 62 is driven in the transport direction. Here, the measured value of the timer 33 is reset. Thereafter, since the light receiving element 12 shifts to a light shielding state, the motor 62 is continuously driven.
　図６は、再生可能な光記録媒体７０が短時間挿入された後に引き抜かれ、再度挿入されなかった場合を示している。
　受光素子２２が遮光状態に移行したことより挿入物の挿入が検知され（図６の「挿入」）、モータ６２が搬送方向に駆動する。ただし、受光素子２２が受光状態に移行したため（図６の「引き抜き」）、モータ６２の駆動を停止させる。しかし、待機時間内に再度受光素子２２が遮光状態に移行しなかったため、モータが排出方向に駆動される。 FIG. 6 shows a case where the reproducible optical recording medium 70 is pulled out after being inserted for a short time and is not inserted again.
The insertion of the insert is detected when the light receiving element 22 shifts to the light shielding state (“insertion” in FIG. 6), and the motor 62 is driven in the transport direction. However, since the light receiving element 22 has shifted to the light receiving state (“pulling” in FIG. 6), the driving of the motor 62 is stopped. However, since the light receiving element 22 does not shift to the light shielding state again within the waiting time, the motor is driven in the discharge direction.
　図７は、異物が挿入された場合を示している。
　受光素子２２が遮光状態に移行したことにより挿入物の挿入が検知され（図７の挿入）、モータ６２が搬送方向に駆動する。その後、受光素子１２が遮光状態に移行したが受光素子２２は受光状態に移行したため、モータ６２が排出方向に駆動される。 FIG. 7 shows a case where a foreign object is inserted.
The insertion of the insert is detected when the light receiving element 22 shifts to the light shielding state (insertion in FIG. 7), and the motor 62 is driven in the transport direction. Thereafter, the light receiving element 12 has shifted to the light shielding state, but the light receiving element 22 has shifted to the light receiving state, so that the motor 62 is driven in the ejection direction.
　図８は、再生可能な光記録媒体７０が短時間挿入された後に引き抜かれ、再度挿入される動作が繰り返し行われた場合を示している。
　まず、図８（ａ）では、受光素子２２が遮光状態に移行したことにより挿入物の挿入が検知され（図８（ａ）の「挿入」）、モータ６２が搬送方向に駆動する。ただし、受光素子２２が受光状態に移行したため（図８（ａ）の「引き抜き１」）、モータ６２の駆動を停止させる。待機時間内に再度受光素子２２が遮光状態に移行したことにより挿入物の挿入が検知され（図８（ａ）の「再挿入１」）、モータ６２が搬送方向に駆動する。ここで、タイマ３３の計測値がリセットされる。その後、再度受光素子２２が受光状態に移行したため（図８（ａ）の「引き抜き２」）、モータ６２の駆動を停止させる。待機時間内に再度受光素子２２が遮光状態に移行したことにより挿入物の挿入が検知され（図８（ａ）の「再挿入２」）、モータ６２が搬送方向に駆動する。ここでも再度タイマ３３の計測値をリセットする。その後、受光素子１２が遮光状態に移行するため、モータ６２の駆動が継続される。 FIG. 8 shows a case in which the reproducible optical recording medium 70 is pulled out after being inserted for a short time and then repeatedly inserted.
First, in FIG. 8A, the insertion of the insert is detected because the light receiving element 22 has shifted to the light shielding state (“insertion” in FIG. 8A), and the motor 62 is driven in the transport direction. However, since the light receiving element 22 has shifted to the light receiving state (“Pullout 1” in FIG. 8A), the drive of the motor 62 is stopped. The insertion of the insert is detected when the light receiving element 22 again shifts to the light shielding state within the standby time ("reinsertion 1" in FIG. 8A), and the motor 62 is driven in the transport direction. Here, the measured value of the timer 33 is reset. Thereafter, since the light receiving element 22 again shifts to the light receiving state (“drawing 2” in FIG. 8A), the driving of the motor 62 is stopped. The insertion of the insert is detected when the light receiving element 22 again shifts to the light shielding state within the waiting time ("reinsertion 2" in FIG. 8A), and the motor 62 is driven in the transport direction. Here again, the measured value of the timer 33 is reset. Thereafter, since the light receiving element 12 shifts to the light shielding state, the driving of the motor 62 is continued.
　さらに図８（ｂ）では、短時間挿入が３回繰り返された後、再生可能な光記録媒体７０が再生位置に搬送される場合を示している。短時間挿入の上限回数や上限時間を設けることなく複数回の短時間挿入を受け付けるように設定してもよいし、タイマ３３とは異なるタイマを設け、一回目の短時間挿入が実行された場合に計測を開始し、計測時間が一定時間を経過すると、エラーストップとして光記録媒体７０の挿入の受け付けを中止する、あるいはモータ６２を排出方向に駆動させるように構成してもよい。 Further, FIG. 8B shows a case where the reproducible optical recording medium 70 is transported to the reproduction position after the short-time insertion is repeated three times. It may be set to accept a plurality of short-time insertions without setting an upper limit number of times and an upper limit time, or when a timer different from the timer 33 is provided and the first short-time insertion is executed When the measurement time is started and a certain time has elapsed, the insertion of the optical recording medium 70 may be stopped as an error stop, or the motor 62 may be driven in the ejection direction.
　図９は、挿入物が強制的に引き抜かれた場合を示している。
　受光素子２２が遮光状態に移行したことより挿入物の挿入が検知され（図９の「挿入」、モータ６２が搬送方向に駆動する。さらに受光素子１２も遮光状態に移行し、まず受光素子１２が受光状態に移行し（図９の「強制的引き抜き」）、さらに受光素子２２が受光状態に移行したことから、光記録媒体７０の強制的な引き抜きが行われたと判断し、モータ６２が排出方向に駆動される。 FIG. 9 shows the case where the insert is forcibly pulled out.
The insertion of the insert is detected from the fact that the light receiving element 22 has shifted to the light shielding state ("insertion" in FIG. 9), and the motor 62 is driven in the conveying direction. The light receiving element 12 also shifts to the light shielding state. Shifts to the light receiving state (“forced extraction” in FIG. 9), and further, since the light receiving element 22 has shifted to the light receiving state, it is determined that the optical recording medium 70 has been forcibly pulled out, and the motor 62 is ejected. Driven in the direction.
　以上のように、この実施の形態１によれば、受光素子１２，２２の受光状態に基づいて、再生可能な光記録媒体７０の挿入であるか、異物の挿入であるか、また光記録媒体７０の挿入が正常の挿入であるか、短時間挿入された後に引き抜かれたか、強制的に引き抜かれたかを判定し、短時間挿入された後は、一定時間排出動作に移行せず、光記録媒体７０の再挿入を待機するように構成したので、再挿入が検知された場合にスムーズに搬送動作に移行させることができる。 As described above, according to the first embodiment, based on the light receiving state of the light receiving elements 12 and 22, it is possible to insert the reproducible optical recording medium 70, foreign matter, or the optical recording medium. It is determined whether the insertion of 70 is a normal insertion, whether it has been pulled out after being inserted for a short time, or forcibly pulled out. Since it is configured to wait for the re-insertion of the medium 70, the transfer operation can be smoothly performed when the re-insertion is detected.
　また、短時間挿入された後に引き抜きが行われ、再挿入を待機したが再挿入が行われなかった場合、異物と判定された場合、強制的な引き抜きが発生した場合には、排出動作に移行するように構成したので、異物の挿入を防ぐことができる。 Also, after the insertion is performed for a short time, the extraction is performed, the re-insertion is waited, but the re-insertion is not performed, the foreign object is determined, the case where the forcible extraction occurs, the process proceeds to the discharge operation. Since it comprised so that insertion of a foreign material can be prevented.
　なお、上述した実施の形態１では、発光素子１１，２１および受光素子１２，２２を図２に示す配置とし、異物の形状を挿入時に受光素子２２を遮光し、異物が装置内に完全に搬送される前に受光素子２２が受光に変化する形状として説明を行ったが、発光素子および受光素子の配置数および配置位置の変更により、検知可能な異物の形状も適宜変化する。 In the first embodiment described above, the light emitting elements 11 and 21 and the light receiving elements 12 and 22 are arranged as shown in FIG. 2, the light receiving element 22 is shielded when the shape of the foreign matter is inserted, and the foreign matter is completely conveyed into the apparatus. The shape of the light receiving element 22 that changes to light reception has been described before the detection. However, the shape of the detectable foreign matter changes as appropriate by changing the number of light emitting elements and the light receiving elements and the arrangement position.
　なお、本願発明はその発明の範囲内において、実施の形態の任意の構成要素の変形、もしくは実施の形態の任意の構成要素の省略が可能である。 In the present invention, any component of the embodiment can be modified or any component of the embodiment can be omitted within the scope of the invention.
　以上のように、この発明に係る光記録媒体再生装置は、ユーザの操作性向上と精度の高い異物検知機能を実現したオーディオ再生装置などに利用することができる。 As described above, the optical recording medium reproducing apparatus according to the present invention can be used for an audio reproducing apparatus and the like that realize an improved user operability and a highly accurate foreign object detection function.
　１０　第１の測定部、１１，２１　発光素子、１２，２２　受光素子、１３，２３　Ｉ／Ｖ変換器、１４，２４　増幅器、２０　第２の測定部、３０　演算処理部、３１　ＡＤ変換器、３２　挿入検知部、３３　タイマ、３４　挿入状態判定部、４０　制御部、５０　サーボ部、６０　駆動部、６１　増幅器、６２　モータ、６３　搬送機構、６４　ローディング完了検知部、７０　光記録媒体、８０　プリズム。 10 first measurement unit, 11, 21 light emitting element, 12, 22 light receiving element, 13, 23 I / V converter, 14, 24 amplifier, 20 second measurement unit, 30 arithmetic processing unit, 31 AD converter, 32 insertion detection unit, 33 timer, 34 insertion state determination unit, 40 control unit, 50 servo unit, 60 drive unit, 61 amplifier, 62 motor, 63 transport mechanism, 64 loading completion detection unit, 70 optical recording medium, 80 prism.

Claims (2)

  1. 　光記録媒体に記録された情報を再生する光記録媒体再生装置において、
    　装置内の搬送経路に沿って挿入物を搬送する搬送機構と、
    　前記搬送機構により前記搬送経路に沿って搬送される挿入物を検知する複数の検知部と、
    　前記搬送機構により前記挿入物が搬送されていく途中で、前記複数の検知部のうち、前記光記録媒体の挿入口側に位置する検知部が検知状態になったのち非検知状態となった場合に、当該非検知状態となった時点から所定の待機時間内であれば前記搬送機構による搬送動作を停止させ、前記所定の待機時間を越えれば、前記搬送機構による排出動作を行い、前記待機時間内に前記検知部が検知状態になった場合は前記搬送機構による搬送動作を再開させる制御部とを備えることを特徴とする光記録媒体再生装置。     In an optical recording medium reproducing apparatus for reproducing information recorded on an optical recording medium,
    A transport mechanism for transporting an insert along a transport path in the apparatus;
    A plurality of detection units for detecting an insert conveyed along the conveyance path by the conveyance mechanism;
    In the middle of transporting the insert by the transport mechanism, among the plurality of detection units, the detection unit located on the optical recording medium insertion port side enters a detection state and then enters a non-detection state. In addition, if it is within a predetermined standby time from the time when the non-detection state is reached, the transport operation by the transport mechanism is stopped, and if the predetermined standby time is exceeded, the discharge operation by the transport mechanism is performed, and the standby time An optical recording medium reproducing apparatus comprising: a control unit that resumes a transport operation by the transport mechanism when the detection unit is in a detection state.
  2. 　前記制御部は、前記搬送機構により前記挿入物が搬送されていく途中で、前記光記録媒体の挿入口側に位置する検知部を含む複数の検知部が検知状態となった後に、当該複数の検知部が全て非検知状態となった場合に、前記挿入物が強制的に引き抜かれたと判断して、前記搬送機構による排出動作を行うことを特徴とする請求項１記載の光記録媒体再生装置。 The control unit is configured such that the plurality of detection units including the detection unit located on the insertion port side of the optical recording medium are in a detection state while the insert is being conveyed by the conveyance mechanism. 2. The optical recording medium reproducing device according to claim 1, wherein when all the detection units are in a non-detection state, it is determined that the insert has been forcibly pulled out, and a discharge operation is performed by the transport mechanism. .
PCT/JP2012/003701 2012-06-06 2012-06-06 Optical recording medium playback device WO2013183086A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03134859A (en) * 1989-10-20 1991-06-07 Clarion Co Ltd Disk loading mechanism
JP2006065978A (en) * 2004-08-27 2006-03-09 Alpine Electronics Inc Changer type disk device
JP2006338820A (en) * 2005-06-03 2006-12-14 Shinano Kenshi Co Ltd Disk driving apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03134859A (en) * 1989-10-20 1991-06-07 Clarion Co Ltd Disk loading mechanism
JP2006065978A (en) * 2004-08-27 2006-03-09 Alpine Electronics Inc Changer type disk device
JP2006338820A (en) * 2005-06-03 2006-12-14 Shinano Kenshi Co Ltd Disk driving apparatus

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